Ynfann428: JESD22A-108 4.2.2 Operating voltage 敘述: Unless otherwise specified, the operating voltage should be the maximum operating voltage specified for the device unless the conditions of 4.2.1 cannot be met. => 這是指Stress電壓必須大於等於元件datasheet定義的最大工作電壓； => 簡單講就是產品spec 寫到哪我們最少就必須BI 到哪； => 但Stress 電壓=Vddmax 時，電壓加速倍率=1，並無加速 A higher voltage is permitted in order to obtain lifetime acceleration from voltage as well as temperature; this voltage must not exceed the absolute maximum rated voltage for the device, and must be agreed upon by the device manufacturer. => 允許更高的電壓，以便從電壓和溫度中獲得壽命加速； => 這是指Vddstress 需> Vddmax 以上，才能計算出電壓加速倍率>1。